12151075131-10-15-23-30-50-80-100-200-500100010410.990100+100+166654000-3000=51000-3000=48000-3000=45000-3500=41500-3500=38000-4100=33900-4100=29800-4000=25800-3100=22700-3000=19700+4000=23700-2500=21200+2000=23200-2000=21200-2000=19200-4000=15200-5200=10000+2000=12000